172 "TERKA NOVA" EXPEDITION. 



these large examples is characterized by the formation of a very thin terminal 

 chamber less than half the size of the penultimate chamber, evidence of senility 

 or of a moribund condition. At Station 16 a recognizable fragment only. 



405. Nodosaria vertebralis (Batsch). 



Naitfihis {(hihoceras) vertebralis, Batsch, 1791, CS. p. 3, No. 6, pi. ii, figs. 6, a, h. 

 Nodosaria vertebralis, Cushman, 1910, etc., FNP. 1913, p. 60, pi. xx.xii, fig. 1. 



Station 6. 



Excellent and typical examples at Station 6. Also one very large specimen 

 [ol mm.) in which the longitudinal costae, which begin strong and normal, 

 gradually die away in later chambers, becoming smooth and sub-globular until, 

 towards the oral extremity, the costae are mostly represented by weak bridges 

 across tlie sunken sutural lines. 



406. Nodosaria cateiiulata, Brady. 



Nodosaria calemdata. Brady, 1884, FC. p. 515, pi. Ixiii, figs. 32-34. 



Cushman, 1910. etc.. FNP. 1913, p. 57, pi. xxv. fig. 3. 



Station 11. 



Two very weak but clearly identifiable specimens. 



407. Nodosaria adolphina (d'Orbigny). 



Dentalina adolphina, d'Orbigny, 1846, FFV. p. 51. pi. ii, figs. 18-20. 

 Nodosaria „ Schwager. 1866, FKN. p. 235, pi. vi, figs. 72, 73. 



, „ monilis; 0. Silvestri, 1872, NFVI. p. 71, pi. viii, fig. 173-189. 



Stations 2, 3, 6, 7. 



Limited to the N.Z. area, and all the .specimens have a more or less eroded 

 surface ; probably some are of recent origin, but others are derived from beds of 

 submarine fossil origin (See Introductory Note, p. 27). Except at Station 7, where 

 the microspheric type occurs, the specimens being small and prominently spinous, 

 all the specimens are megalospheric and the spinous development is scant. The 

 best and largest are from Station 6. 



D'Orbigny's species represent a well marked type, subject to great variation 

 in the number of spmes and the method of their arrangement in one or more 

 bands round the base of the chambers. Many species have been created on the 

 strength of these minor variations. O. Silvestri {ut supra) proposed to abandon 

 d'Orbigny's specific name in favour of the name given to certain figures bv 

 Soldani, but his reasons appear to be entirely insufficient (Soldani, Testaceo- 

 graphia, 1789, etc., 1798, vol. ii, p. 15, pi. ii, fig. x, Orthoceras arthrocena sive 

 globidifem ; vol. ii. p. 35. pi. x, fig. a, Orthoceras rnonile ; see P. & J., etc., 1859, etc., 

 NF. 1871, p. 155, pi. ix, fig. 37). The Soldanian figures represent a smooth 

 moniliform test, and have been identified by Brady, Parker and Jones, and others. 



